Add 7-zip file explorer

svelte/src/file_viewer/FileUtilities.svelte

@@ -38,7 +38,7 @@ export const file_set_href = file => {
 export const file_type = file => {
 	if (file.mime_type === "application/bittorrent" || file.mime_type === "application/x-bittorrent") {
 		return "torrent"
-	} else if (file.mime_type === "application/zip") {
+	} else if (file.mime_type === "application/zip" || file.mime_type === "application/x-7z-compressed") {
 		return "zip"
 	} else if (file.mime_type.startsWith("image")) {
 		return "image"

svelte/src/file_viewer/viewers/Zip.svelte

@@ -24,12 +24,19 @@ let zip = {
 	children: null,
 }
 let comp_ratio = 0
+let archive_type = ""
 
 export const set_file = async f => {
 	file = f
 
 	dispatch("loading", true)
 
+	if (f.mime_type === "application/zip") {
+		archive_type = "zip"
+	} else if (f.mime_type === "application/x-7z-compressed") {
+		archive_type = "7z"
+	}
+
 	try {
 		let resp = await fetch(f.info_href+"/zip")
 
@@ -40,8 +47,12 @@ export const set_file = async f => {
 
 		zip = await resp.json()
 
-		// Set the download URL for each file in the zip
-		recursive_set_url(f.info_href+"/zip", zip)
+		// Check if the zip has the property which allows separate files to be
+		// downloaded. If so then we set the download URL for each file
+		if (zip.properties && zip.properties.includes("read_individual_files")) {
+			// Set the download URL for each file in the zip
+			recursive_set_url(f.info_href+"/zip", zip)
+		}
 
 		comp_ratio = (zip.size / file.size)
 	} catch (err) {
@@ -67,6 +78,12 @@ const recursive_set_url = (parent_path, file) => {
 <FileTitle title={file.name}/>
 
 <IconBlock icon_href={file.icon_href}>
+	{#if archive_type === "7z"}
+		This is a 7-zip archive. You will need
+		<a href="https://www.7-zip.org/">7-zip</a> or compatible software to
+		extract it<br/>
+	{/if}
+
 	Compressed size: {formatDataVolume(file.size, 3)}<br/>
 	Uncompressed size: {formatDataVolume(zip.size, 3)} (Ratio: {comp_ratio.toFixed(2)}x)<br/>
 	Uploaded on: {formatDate(file.date_upload, true, true, true)}
@@ -83,7 +100,7 @@ const recursive_set_url = (parent_path, file) => {
 
 {#if status === "finished"}
 	<TextBlock>
-		<h2>Files in this zip archive</h2>
+		<h2>Files in this archive</h2>
 		<ZipItem item={zip} />
 	</TextBlock>
 {:else if status === "parse_failed"}

svelte/src/file_viewer/viewers/ZipItem.svelte

@@ -25,7 +25,12 @@ export let item = {
 	{#each Object.entries(item.children) as [name, child]}
 		{#if !child.children}
 			<li>
-				<a href={child.download_url}>{name}</a> ({formatDataVolume(child.size, 3)})<br/>
+				{#if child.download_url}
+					<a href={child.download_url}>{name}</a>
+				{:else}
+					{name}
+				{/if}
+				({formatDataVolume(child.size, 3)})<br/>
 			</li>
 		{/if}
 	{/each}